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/* $OpenBSD: mopa.out.c,v 1.18 2022/12/28 21:30:17 jmc Exp $ */
/*
* mopa.out - Convert a Unix format kernel into something that
* can be transferred via MOP.
*
* This code was written while referring to the NetBSD/vax boot
* loader. Therefore anything that can be booted by the Vax
* should be convertible with this program.
*
* If necessary, the a.out header is stripped, and the program
* segments are padded out. The BSS segment is zero filled.
* A header is prepended that looks like an IHD header. In
* particular the Unix machine ID is placed where mopd expects
* the image type to be (offset is IHD_W_ALIAS). If the machine
* ID could be mistaken for a DEC image type, then the conversion
* is aborted. The original a.out header is copied into the front
* of the header so that once we have detected the Unix machine
* ID we can haul the load address and the xfer address out.
*/
/*
* Copyright (c) 1996 Lloyd Parkes. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Lloyd Parkes.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "os.h"
#include "common/common.h"
#include "common/mopdef.h"
#include "common/file.h"
#if defined(__OpenBSD__)
#include <sys/exec.h>
#endif
#if defined(__FreeBSD__)
#include <sys/imgact_aout.h>
#endif
#if defined(__bsdi__)
#include <a.out.h>
#define NOAOUT
#endif
#if !defined(MID_VAX)
#define MID_VAX 140
#endif
#ifndef NOELF
#if defined(__NetBSD__) || defined(__OpenBSD__)
#include <elf.h>
#else
#define NOELF
#endif
#endif
#ifndef NOELF
#if !defined(_LP64)
#define NOELF64
#endif
#endif
u_char header[512]; /* The MOP header we generate is 1 block. */
#if !defined(NOAOUT)
struct exec ex, ex_swap;
#endif
int
main (int argc, char **argv)
{
FILE *out; /* A FILE because that is easier. */
int i, j;
struct dllist dl;
short image_type;
#ifdef NOAOUT
fprintf(stderr, "%s: has no function in OS/BSD\n", argv[0]);
return(1);
#endif
if (argc != 3) {
fprintf (stderr, "usage: %s infile outfile\n", argv[0]);
return (1);
}
dl.ldfd = open (argv[1], O_RDONLY);
if (dl.ldfd == -1)
err(2, "open `%s'", argv[1]);
if (GetFileInfo(&dl, 0) == -1)
errx(3, "`%s' is an unknown file type", argv[1]);
switch (dl.image_type) {
case IMAGE_TYPE_MOP:
errx(3, "`%s' is already a MOP image", argv[1]);
break;
#ifndef NOELF
case IMAGE_TYPE_ELF32:
if (dl.e_machine != EM_VAX)
printf("WARNING: `%s' is not a VAX image "
"(machine=%d)\n", argv[1], dl.e_machine);
for (i = 0, j = 0; j < dl.e_nsec; j++)
i += dl.e_sections[j].s_fsize + dl.e_sections[j].s_pad;
image_type = IHD_C_NATIVE;
break;
#endif
#if !defined(NOELF) && !defined(NOELF64)
case IMAGE_TYPE_ELF64:
if (dl.e_machine != EM_ALPHA && dl.e_machine != EM_ALPHA_EXP)
printf("WARNING: `%s' is not an ALPHA image "
"(machine=%d)\n", argv[1], dl.e_machine);
for (i = 0, j = 0; j < dl.e_nsec; j++)
i += dl.e_sections[j].s_fsize + dl.e_sections[j].s_pad;
image_type = IHD_C_ALPHA;
break;
#endif
#ifndef NOAOUT
case IMAGE_TYPE_AOUT:
if (dl.a_mid != MID_VAX)
printf("WARNING: `%s' is not a VAX image (mid=%d)\n",
argv[1], dl.a_mid);
i = dl.a_text + dl.a_text_fill + dl.a_data + dl.a_data_fill +
dl.a_bss + dl.a_bss_fill;
image_type = IHD_C_NATIVE;
break;
#endif
default:
errx(3, "Image type `%s' not supported",
FileTypeName(dl.image_type));
}
dl.nloadaddr = dl.loadaddr;
dl.lseek = lseek(dl.ldfd,0L,SEEK_CUR);
dl.a_lseek = 0;
dl.count = 0;
dl.dl_bsz = 512;
switch (image_type) {
default:
case IHD_C_NATIVE:
/* Offset to ISD section. */
mopFilePutLX(header, IHD_W_SIZE, 0xd4, 2);
/* Offset to 1st section.*/
mopFilePutLX(header, IHD_W_ACTIVOFF, 0x30, 2);
/* It's a VAX image.*/
mopFilePutLX(header, IHD_W_ALIAS, IHD_C_NATIVE, 2);
/* Only one header block. */
mopFilePutLX(header, IHD_B_HDRBLKCNT, 1, 1);
/* Xfer Addr */
mopFilePutLX(header, 0x30 + IHA_L_TFRADR1, dl.xferaddr, 4);
/* load Addr */
mopFilePutLX(header, 0xd4 + ISD_V_VPN, dl.loadaddr / 512, 2);
/* Imagesize in blks.*/
i = (i + 1) / 512;
mopFilePutLX(header, 0xd4 + ISD_W_PAGCNT, i, 2);
break;
case IHD_C_ALPHA:
/* Offset to ISD section. */
mopFilePutLX(header, EIHD_L_ISDOFF, 0xd4, 4);
/* It's an alpha image.*/
mopFilePutLX(header, IHD_W_ALIAS, IHD_C_ALPHA, 2);
/* Only one header block. */
mopFilePutLX(header, EIHD_L_HDRBLKCNT, 1, 4);
/* Imagesize in bytes.*/
mopFilePutLX(header, 0xd4 + EISD_L_SECSIZE, i, 4);
break;
}
out = fopen (argv[2], "w");
if (!out)
err(2, "writing `%s'", argv[2]);
/* Now we do the actual work. Write MOP-image header */
fwrite (header, sizeof (header), 1, out);
switch (dl.image_type) {
case IMAGE_TYPE_MOP:
abort();
case IMAGE_TYPE_ELF32:
#ifdef NOELF
abort();
#else
fprintf(stderr, "copying ");
for (j = 0; j < dl.e_nsec; j++)
fprintf(stderr, "%s%u+%u", j == 0 ? "" : "+",
dl.e_sections[j].s_fsize,
dl.e_sections[j].s_pad);
fprintf(stderr, "->0x%x\n", dl.xferaddr);
#endif
break;
case IMAGE_TYPE_AOUT:
#ifdef NOAOUT
abort();
#else
fprintf(stderr, "copying %u+%u+%u->0x%x\n", dl.a_text,
dl.a_data, dl.a_bss, dl.xferaddr);
#endif
break;
default:
break;
}
while ((i = mopFileRead(&dl,header)) > 0) {
(void)fwrite(header, i, 1, out);
}
fclose (out);
exit(0);
}
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